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#!/bin/sh
#
# Copyright (c) 2015 EMC Corp.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# Thread suspend deadlock seen:
# https://people.freebsd.org/~pho/stress/log/pthread9.txt
# Test scenario by Conrad Meyer.
# Fixed by r283320.
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
. ../default.cfg
here=`pwd`
cd /tmp
sed '1,/^EOF/d' < $here/$0 > pthread9.c
mycc -o pthread9 -Wall -Wextra -O2 pthread9.c -lpthread || exit 1
rm -f pthread9.c
status=0
if ping -c 2 `echo $nfs_export | sed 's/:.*//'` > /dev/null 2>&1; then
mount -t nfs -o nfsv3,tcp,nolockd,retrycnt=3,intr $nfs_export \
$mntpoint || exit 1
sleep .5
echo "Expect core dumps"
(cd $mntpoint; /tmp/pthread9) &
sleep 200
if pgrep -q pthread9; then
echo FAIL
procstat -k `pgrep pthread9 | grep -v $!`
status=1
fi
rm -f $mntpoint/pthread9.core
umount -f $mntpoint
wait
fi
rm -f /tmp/pthread9 /tmp/pthread9.core
exit $status
EOF
#include <sys/types.h>
#include <machine/atomic.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#ifdef __FreeBSD__
#include <pthread_np.h>
#define __NP__
#endif
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <sys/wait.h>
#include <unistd.h>
#define LOOPS 50
#define RUNTIME 180
volatile u_int go;
int fd;
char file[] = "pthread9.file";
static void *
t1(void *data __unused)
{
int i;
#ifdef __NP__
pthread_set_name_np(pthread_self(), __func__);
#endif
while (go == 0)
pthread_yield();
atomic_add_int(&go, 1);
for (i = 0; i < 100; i++)
if (ftruncate(fd, 0) == -1)
err(1, "truncate");
return (NULL);
}
static void *
t2(void *data __unused)
{
int i;
#ifdef __NP__
pthread_set_name_np(pthread_self(), __func__);
#endif
while (go == 0)
pthread_yield();
atomic_add_int(&go, 1);
for (i = 0; i < 100; i++)
if (ftruncate(fd, 0) == -1)
err(1, "truncate");
return (NULL);
}
static void *
t3(void *data __unused)
{
#ifdef __NP__
pthread_set_name_np(pthread_self(), __func__);
#endif
while (go != 3)
pthread_yield();
abort();
return (NULL);
}
int
test(void)
{
pthread_t tid[3];
int i, rc;
go = 0;
if ((rc = pthread_create(&tid[0], NULL, t1, NULL)) != 0)
errc(1, rc, "pthread_create");
if ((rc = pthread_create(&tid[1], NULL, t2, NULL)) != 0)
errc(1, rc, "pthread_create");
if ((rc = pthread_create(&tid[2], NULL, t3, NULL)) != 0)
errc(1, rc, "pthread_create");
usleep(200);
atomic_add_int(&go, 1);
for (i = 0; i < 3; i++) {
if ((rc = pthread_join(tid[i], NULL)) != 0)
errc(1, rc, "pthread_join");
}
_exit(0);
}
int
main(void)
{
time_t start;
if ((fd = open(file, O_RDWR | O_CREAT, 0644)) == -1)
err(1, "open(%s)", file);
start = time(NULL);
while (time(NULL) - start < RUNTIME) {
if (fork() == 0)
test();
wait(NULL);
}
close(fd);
unlink(file);
return (0);
}
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